180 



FLORA OF JAMAICA 



Zanthoxylum 



Westmoreland, 500 ft. ; Stanmore Hill, 2200 ft. ; Harris 1 Fl. Jam. 5209 b, 

 5315, 6129, 6549, 6550, 7100, 9874. 



Shrub or tree, 15-40 ft. high ; trunk and sometimes the larger branches 

 armed with somewhat flattened conical corky spines ; twigs and leaves 

 generally without spines. Leaves 3-18 cm. 1. ; leaflets in 2-4 pairs, base 

 wedge-shaped, shining above, nerves and veins prominulous on both sides, 

 reticulate, 5-13 cm. 1. ; margin entire or obscurely crenulate ; pellucid dots 

 along the margin. Inflorescence 5-10 cm. 1. Male floioers : Sepals 3, 

 united below, open in bud, roundish- ovate, about '5 mm. 1. Petals 3, 

 broadly elliptical, very imbricate, concave, 2"3 mm. 1. Stamens 3, a little 

 longer than the petals. Pistil rudimentary, about 1 mm. 1., 3-lobed at 

 base, acuminate above. Female floivers : Petals 3, roundish-obovate, 

 hooded, 2'5 mm. 1. Staminodes none. Oynophore disk-like, about one- 

 third as long as the ovary. Carpel with 2 ovules ; style lateral. Coccus 

 globular, slightly apiculate, rough with wrinkles and glandular dots, keeled 

 along one side where the valves split open, 5 mm. 1. ; endocarp at length 

 loose. 



3. PELTOSTIGMA Walp. 



A small tree. Leaves alternate, digitate, with 3 leaflets. 

 Flowers large, sweet-scented, in a long-stalked few-flowered 

 axillary corymb; pedicels with leafy deciduous bracts. Sepals 4 (3), 



Fig. 57. — Peltostigma pteleoides Walp. 



A, Portion of inflorescence and a leaf X S- 



B, 



<-'> 



Pistil and disk, showing the insertion 



of the stamens, much enlarged. 

 Flower cut lengthwise, showing sepal 



(8), base of petal {p), disk (d), base of 



(A after Bot. Mag. ; B, C after Engler.) 



filament (/), ovary with ovules, and 

 stigma, nmch enlarged. 

 D, Fruit showing the cocci opening above 



